CN108150481B - Double-piston pushing-leaning assembly for rotary steering drilling tool - Google Patents
Double-piston pushing-leaning assembly for rotary steering drilling tool Download PDFInfo
- Publication number
- CN108150481B CN108150481B CN201810004423.9A CN201810004423A CN108150481B CN 108150481 B CN108150481 B CN 108150481B CN 201810004423 A CN201810004423 A CN 201810004423A CN 108150481 B CN108150481 B CN 108150481B
- Authority
- CN
- China
- Prior art keywords
- piston
- oil
- groove
- pushing
- cylinder sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 67
- 238000003860 storage Methods 0.000 claims abstract description 32
- 239000000428 dust Substances 0.000 claims abstract description 23
- 239000003921 oil Substances 0.000 claims description 96
- 239000007788 liquid Substances 0.000 claims description 31
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims 2
- 230000006355 external stress Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 3
- 239000002775 capsule Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B2015/206—Combined actuation, e.g. electric and fluid actuated
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention relates to the technical field of drilling equipment, in particular to a double-piston pushing assembly for a rotary steering drilling tool, which comprises a pushing shell, a piston pressing plate and a piston cylinder sleeve assembly, wherein the piston cylinder sleeve assembly comprises a cylinder sleeve, an actuating piston, a piston top block and a dust cover; at least two piston mounting holes are arranged on the piston pressing plate, and an oil cylinder sleeve with the lower part in the piston storage cavity is arranged in each piston mounting hole. The invention has reasonable and compact structure, can realize the balance of internal and external stress through the dust cover, can be used for underground pressurized operation, can improve the deflection precision of the rotary guiding drilling tool by adopting the double pistons to jointly act on the guard plate, can reduce the failure rate and prolong the acting time of the whole instrument.
Description
Technical Field
The invention relates to the technical field of drilling equipment, in particular to a double-piston pushing assembly for a rotary steering drilling tool.
Background
During drilling, the vertical drilling tool may meet the wellbore trajectory requirements by adjusting the well deviation in real time to bring the drill bit to a predetermined target. The pushing type vertical drilling tool is widely applied, the tool realizes the guiding function by controlling the actions of three hydraulic modules, the hydraulic modules integrate machines, electricity and liquid, and are a part of the vertical drilling tool which is important, however, the hydraulic modules of the existing vertical drilling tool have various problems of high failure rate, low control precision and the like, so that the whole instrument cannot work continuously for a long time.
Disclosure of Invention
The invention provides a double-piston pushing assembly for a rotary steering drilling tool, which overcomes the defects of the prior art, and can effectively solve the problems of high failure rate, low control precision and short continuous operation time of the whole instrument existing in the conventional piston pushing equipment.
The technical scheme of the invention is realized by the following measures: the double-piston pushing assembly for the rotary steering drilling tool comprises a pushing shell, a piston pressing plate and a piston cylinder sleeve assembly, wherein the piston cylinder sleeve assembly comprises a cylinder sleeve, an actuating piston, a piston top block and a dust cover, a piston groove with an upward opening is formed in the pushing shell, the piston pressing plate is fixedly arranged on the upper part of the pushing shell in the position of the piston groove, a piston storage cavity is formed between the piston pressing plate and the pushing shell, and a piston liquid inlet channel which can be communicated with the piston storage cavity is formed in the pushing shell; the piston pressing plate is provided with at least two piston mounting holes, the lower part of each piston mounting hole is internally provided with a cylinder liner in the piston storage cavity, a communication gap capable of communicating an inner hole of the cylinder liner with the piston storage cavity is formed between the lower end of each cylinder liner and the pushing shell, each cylinder liner is internally provided with an actuating piston, the top of each actuating piston is provided with a piston top block capable of generating angle deflection along with the movement of the actuating piston, the upper end of the cylinder liner is positioned above the piston pressing plate, a dust cover which is positioned above the piston pressing plate and capable of generating stretching or compression along with the movement of the actuating piston is arranged between the piston top block and the corresponding cylinder liner, the inner side of the lower end of the dust cover is fixedly arranged together with the outer side of the upper part of the cylinder liner, and the inner side of the upper end of the dust cover is fixedly arranged together with the outer side of the upper part of the piston top block.
The following are further optimizations and/or improvements to the above-described inventive solution:
The pushing shell can be provided with an oil storage groove with an upward opening, the pushing shell corresponding to the position of the oil storage groove is fixedly provided with an oil bag pressing plate, the middle part of the oil bag pressing plate is provided with an oil bag installation hole, the oil bag installation hole is internally provided with an oil bag body with a downward opening, the outer side of the lower end of the oil bag body is provided with an installation edge pressed between the oil bag pressing plate and the pushing shell, an oil storage cavity is formed between the oil bag body and the pushing shell, and the pushing shell is provided with an oil bag liquid inlet channel which can be communicated with the oil storage cavity.
The pushing-leaning shell can be fixedly provided with a hydraulic shell, a hydraulic driving assembly capable of realizing liquid boosting is arranged in the hydraulic shell, an oil inlet cavity is arranged in the hydraulic shell corresponding to the liquid inlet position of the hydraulic driving assembly, an oil outlet cavity is arranged in the hydraulic shell corresponding to the liquid outlet position of the hydraulic driving assembly, and a hydraulic oil inlet channel capable of communicating the oil outlet cavity with a piston liquid inlet channel and a hydraulic oil outlet channel capable of communicating the oil inlet cavity with an oil bag liquid inlet channel are arranged on the hydraulic shell.
The oil bag pressing plate, the oil bag body, the piston cylinder sleeve component and the piston pressing plate are covered in the fixed cover, a sliding opening is formed in the fixed cover corresponding to the position of the piston pressing cover, a protecting plate cover with a downward opening and covered on the outer side of the piston pressing cover is arranged in the sliding opening, a circumferential groove is formed in the pushing shell corresponding to the outer circumferential position of the piston pressing cover, the lower end of the protecting plate cover is located in the circumferential groove, lower protruding blocks with lower ends being arranged on the corresponding piston pressing blocks are arranged on the inner side of the upper end of the protecting plate cover corresponding to the position of each piston pressing block, outer edge plates are fixed on the left side and the right side of the lower end of the protecting plate cover, and compression springs with tops propped against the inner side of the fixed cover are arranged on the upper side of each outer edge plate.
The left side and the right side of the fixed cover can be provided with keyways with outward openings, and each keyway is internally provided with a fixed key with an inner end exposed out of the fixed cover after rotating through a bias pin shaft.
The compression spring may be a double layer combination spring.
The inner side of the guard plate cover corresponding to the oil bag pressing plate can be fixed with a pressing block which is arranged on the oil bag pressing plate.
An arc-shaped groove can be formed in the inner side of the upper portion of the actuating piston, an arc-shaped protrusion matched with the arc-shaped groove is formed in the bottom of the piston top block, and the arc-shaped protrusion is arranged in the spherical groove.
An arc-shaped groove can be formed in the inner side of the upper portion of the actuating piston, a spherical bulge matched with the spherical groove is formed in the bottom of the piston top block, and the spherical bulge is arranged in the spherical groove.
The dust cover may be a rubber-made rotor, and an arc-shaped curved surface is provided on the rubber-made rotor.
An outer ring table can be arranged on the outer side of the middle of the oil cylinder sleeve, and a limiting clamping groove is formed between a piston pressing plate corresponding to the outer ring table and the pushing shell, and the outer ring table is clamped into the corresponding limiting clamping groove.
The upper part of the pushing shell corresponding to the lower end position of each cylinder sleeve can be provided with a limiting groove, the cylinder sleeves are positioned in the corresponding limiting grooves, an oil cylinder channel for communicating the two limiting grooves is arranged between the bottoms of every two adjacent limiting grooves, a piston liquid inlet channel is at least communicated with one of the limiting grooves, a communicating gap is formed between the bottom end of each cylinder sleeve and the bottom end of each limiting groove, the middle part of the bottom surface of each actuating piston is provided with an inner groove, and the pushing shell corresponding to the lower position of each actuating piston is provided with an upper bulge which is profiled with the inner groove and is positioned in the inner groove.
The invention has reasonable and compact structure, can realize the balance of internal and external stress through the dust cover, can be used for underground pressurized operation, can improve the deflection precision of the rotary guiding drilling tool by adopting the double pistons to act on the guard plate together, can reduce the failure rate, prolongs the acting time of the whole instrument, and has the characteristics of convenient use, easy processing and high stability.
Drawings
Fig. 1 is a schematic diagram of a front view of a preferred embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of FIG. 1 at A-A.
The codes in the drawings are respectively: the hydraulic cylinder comprises a pushing shell, a piston pressing plate, an oil cylinder sleeve, an actuating piston, a piston top block, a dust cover, a piston storage cavity, an oil bag pressing plate, an oil bag body, an installation edge, an oil storage cavity, a hydraulic shell, a fixed cover, a guard plate cover, a lower lug, an outer edge plate, a compression spring, a biasing pin shaft, a fixed key, a pressing block, an arc-shaped bulge, an arc-shaped curved surface, an outer ring table and an upper bulge, wherein the pushing shell is 1, the piston pressing plate is 2, the oil cylinder sleeve is 3, the actuating piston is 4, the piston top block is 5, the dust cover is 6, the piston storage cavity is 7, the oil bag pressing plate is 8, the oil bag body is 9, the installation edge is 10, the oil storage cavity is 11, the hydraulic shell is 13, the guard plate cover is 14, the lower lug is 15, the outer edge plate is 17, the compression spring is 18, the biasing pin shaft is 19, the fixed key is 20, the pressing block is 21, the arc-shaped bulge is 21, the arc-shaped curved surface is 22, and the arc-shaped curved surface is 24.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 2 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described below with reference to examples and figures:
As shown in fig. 1 and 2, the rotary steering drilling tool is pushed by a double-piston pushing assembly to a shell 1, a piston pressing plate 2 and a piston cylinder sleeve assembly, wherein the piston cylinder sleeve assembly comprises a cylinder sleeve 3, an actuating piston 4, a piston top block 5 and a dust cover 6, a piston groove with an upward opening is arranged on the pushing shell 1, the piston pressing plate 2 is fixedly arranged on the upper part of the pushing shell 1 in the position of the piston groove, a piston storage cavity 7 is formed between the piston pressing plate 2 and the pushing shell 1, and a piston liquid inlet channel which can be communicated with the piston storage cavity 7 is arranged on the pushing shell 1; the piston pressing plate 2 is provided with at least two piston mounting holes, each piston mounting hole is internally provided with a cylinder liner 3 with the lower part in a piston storage cavity 7, a communication gap capable of communicating an inner hole of each cylinder liner 3 with the piston storage cavity 7 is formed between the lower end of each cylinder liner 3 and the pushing shell 1, each cylinder liner 3 is internally provided with an actuating piston 4, the top of each actuating piston 4 is provided with a piston top block 5 capable of generating angle deflection along with the movement of the actuating piston 4, the upper end of each cylinder liner 3 is positioned above the piston pressing plate 2, a dust cover 6 which is positioned above the piston pressing plate 2 and capable of generating stretching or compression along with the movement of the actuating piston 4 is arranged between the piston top block 5 and the corresponding cylinder liner 3, the inner side of the lower end of the dust cover 6 is fixedly arranged together with the outer side of the upper part of the cylinder liner 3, and the inner side of the upper end of the dust cover 6 is fixedly arranged together with the outer side of the upper part of the piston top block 5. The dust cover 6 should be a flexible capsule, and have good ductility, sealability, and high temperature and pressure resistance properties, as required; a sealing ring is arranged between the actuating piston 4 and the cylinder sleeve 3. In the use process, at least one of the invention can be arranged on the existing known rotary steering drilling tool, the outer side of each of the invention is provided with the existing known guard plates, the outer ends of all piston top blocks 5 included in each of the invention are propped against the corresponding guard plates, and then each piston liquid inlet channel is connected with the existing oil supply device, so that the control of the corresponding actuating piston 4 can be realized by inputting hydraulic oil into the piston liquid inlet channel through the oil supply device, the piston top blocks 5 are driven to act on the corresponding guard plates, the rotary steering drilling tool is driven to generate angle deflection by the interaction force, when the offset reaches the preset value, the pressurization of the hydraulic channel can be stopped, and at the moment, the piston top blocks 5 drive the actuating piston 4 to return to the original position under the action of external force; the piston top block 5 can move along with the actuating piston 4 to generate angular deflection, so that the eccentric wear of the actuating piston 4 in the moving process can be prevented, and the service life of the actuating piston is prolonged; the invention has reasonable and compact structure, can realize the balance of internal and external stress through the dust cover 6, can be used for underground pressurized operation, can improve the deflection precision of the rotary guiding drilling tool by adopting at least two pistons to act on the guard plate together, can reduce the failure rate, prolongs the acting time of the whole instrument, and has the characteristics of convenient use, easy processing and high stability.
The double-piston pushing assembly for the rotary steerable drilling tool can be further optimized or/and improved according to actual needs:
As shown in fig. 1 and 2, an oil storage groove with an upward opening is formed in a pushing shell 1, an oil bag pressing plate 8 is fixedly mounted on the pushing shell 1 corresponding to the position of the oil storage groove, an oil bag mounting hole is formed in the middle of the oil bag pressing plate 8, an oil bag body 9 with a downward opening is arranged in the oil bag mounting hole, a mounting edge 10 pressed between the oil bag pressing plate 8 and the pushing shell 1 is arranged on the outer side of the lower end of the oil bag body 9, an oil storage cavity 11 is formed between the oil bag body 9 and the pushing shell 1, and an oil bag liquid inlet channel which can be communicated with the oil storage cavity 11 is formed in the pushing shell 1. The hydraulic oil can be stored by the oil bag body 9, so that the existing hydraulic driving assembly can be combined with the invention to realize the pushing action of the actuating piston 4. According to the requirements, the mounting edge 10 and the oil bag body 9 are integrally arranged; a sealing ring can be arranged between the mounting edge 10 and the pushing housing 1, and can be arranged integrally with the mounting edge 10.
As shown in fig. 1 and 2, a hydraulic housing 12 is fixed on a pushing housing 1, a hydraulic driving assembly capable of realizing liquid boosting is installed in the hydraulic housing 12, an oil inlet cavity is arranged in the hydraulic housing 12 corresponding to the liquid inlet position of the hydraulic driving assembly, an oil outlet cavity is arranged in the hydraulic housing 12 corresponding to the liquid outlet position of the hydraulic driving assembly, and a hydraulic oil inlet channel capable of communicating the oil outlet cavity with a piston liquid inlet channel and a hydraulic oil outlet channel capable of communicating the oil inlet cavity with an oil bag liquid inlet channel are arranged on the hydraulic housing 12. Therefore, the hydraulic oil in the oil bag body 9 can be boosted through the hydraulic driving assembly, and the boosted hydraulic oil is input into the piston liquid inlet channel, so that the driving of the actuating piston 4 can be realized. According to the requirements, the hydraulic driving assembly can adopt the prior known technology, such as a combination of a hydraulic pump and a driving device capable of providing power for the hydraulic pump, etc.; the pushing shell 1 and the hydraulic shell 12 are integrally arranged or fixed together by welding or fixedly arranged together by bolting.
As shown in fig. 1 and 2, a fixed cover 13 covering an oil bag pressing plate 8, an oil bag body 9, a piston cylinder sleeve assembly and a piston pressing plate 2 is fixedly arranged on the upper side of a pushing shell 1, a sliding opening is formed in the fixed cover 13 corresponding to the position of a piston pressing cover, a guard plate cover 14 with a downward opening and covering the outer side of the piston pressing cover is arranged in the sliding opening, a circumferential groove is formed in the pushing shell 1 corresponding to the outer circumferential position of the piston pressing cover, the lower end of the guard plate cover 14 is positioned in the circumferential groove, a lower protruding block 15 with the lower end being seated on the corresponding piston pressing block 5 is arranged on the inner side of the upper end of the guard plate cover 14 corresponding to the position of each piston pressing block 5, outer edge plates 16 are fixed on the left side and the right side of the lower end of the guard plate cover 14, and compression springs 17 with the top ends abutting against the inner side of the fixed cover 13 are seated on the upper side of each outer edge plate 16. Therefore, the piston top block 5 can push the guard plate cover 14 to compress the spring 17, when the offset reaches the preset value, the input to the piston liquid inlet channel can be stopped, and at the moment, the restoring force of the compression spring 17 pushes the guard plate cover 14, the piston top block 5 and the actuating piston 4 to restore to the original position.
As shown in fig. 1 and 2, the left side and the right side of the fixed cover 13 are respectively provided with a key groove with an outward opening, and each key groove is internally provided with a fixed key 19 with an inner end exposed out of the fixed cover 13 after rotation through a biasing pin shaft 18. The offset pin 18 on the left is located to the left of the center line of the fixed key 19 and the offset pin 18 on the right is located to the right of the center line of the fixed key 19, as required. Therefore, after the invention is placed in the string to be connected, a user can conveniently rotate the fixed key 19 to expose the inner end of the fixed key 19 out of the fixed cover 13, and the limit of the invention relative to the string to be connected is realized through the fixed key 19 exposed out of the fixed cover 13.
As shown in fig. 1 and 2, the compression spring 17 is a double layer combination spring. This allows the compression spring 17 to have a sufficient elastic force.
As shown in fig. 1 and 2, a pressing block 20 which is arranged on the oil bag pressing plate 8 is fixed on the inner side of the guard plate cover 14 corresponding to the position of the oil bag pressing plate 8. Therefore, the oil bag body 9 can be further limited, and the oil bag pressing plate 8 is prevented from loosening.
As shown in fig. 1 and 2, an arc-shaped groove is formed in the inner side of the upper portion of the actuating piston 4, an arc-shaped protrusion 21 matched with the arc-shaped groove is formed in the bottom of the piston top block 5, and the arc-shaped protrusion 21 is seated in the spherical groove. This facilitates the angular deflection of the piston crown 5 in response to the up-and-down movement of the actuator piston 4.
Preferably, the inner side of the upper part of the actuating piston 4 is provided with an arc-shaped groove, the bottom of the piston top block 5 is provided with a spherical bulge matched with the spherical groove, and the spherical bulge is seated in the spherical groove. This facilitates the angular deflection of the piston crown 5 in response to the up-and-down movement of the actuator piston 4.
As shown in fig. 1 and 2, the dust cover 6 is a rubber-made rotor, and an arcuate curved surface 22 is provided on the rubber-made rotor. This allows the pressure-equalizing capsule to move with the actuating piston 4, creating corresponding stretching and compression edges. The pressure balance capsule can also be made of other materials with ductility, tightness and high temperature and high pressure resistance according to requirements.
As shown in fig. 1 and 2, an outer ring table 23 is arranged on the outer side of the middle part of the cylinder sleeve 3, a limiting clamping groove is arranged between the piston pressing plate 2 corresponding to the outer ring table 23 and the pushing shell 1, and the outer ring table 23 is clamped into the corresponding limiting clamping groove. Therefore, the support of the pushing shell 1 to the cylinder liners 3 can be realized through the limiting clamping grooves, and a communication gap which is formed between the lower end of each cylinder liner 3 and the pushing shell 1 and is used for communicating the inner hole of the cylinder liner 3 with the piston storage cavity 7 is ensured.
As shown in fig. 2, the upper part of the pushing shell 1 corresponding to the lower end position of each cylinder liner 3 is provided with a limit groove, the cylinder liner 3 is positioned in the corresponding limit groove, an oil cylinder channel for communicating two limit grooves is arranged between the bottoms of every two adjacent limit grooves, a piston liquid inlet channel is at least communicated with one of the limit grooves, a communication gap is formed between the bottom end of the cylinder liner 3 and the bottom end of the limit groove, the middle part of the bottom surface of each actuating piston 4 is provided with an inner groove, and the pushing shell corresponding to the lower position of each actuating piston is provided with an upper bulge 24 which is profiled with the inner groove and is positioned in the inner groove. Therefore, all the limiting grooves and the oil cylinder channels can be part of the piston storage cavity, and the piston can be pushed to act when hydraulic oil is filled in the piston storage cavity, and the piston top block is driven to generate outward thrust.
The technical characteristics form the optimal embodiment of the invention, have stronger adaptability and optimal implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (10)
1. The double-piston pushing assembly for the rotary steering drilling tool is characterized by comprising a pushing shell, a piston pressing plate and a piston cylinder sleeve assembly, wherein the piston cylinder sleeve assembly comprises a cylinder sleeve, an actuating piston, a piston top block and a dust cover, a piston groove with an upward opening is formed in the pushing shell, the piston pressing plate is fixedly arranged on the upper part of the pushing shell in the position of the piston groove, a piston storage cavity is formed between the piston pressing plate and the pushing shell, and a piston liquid inlet channel which can be communicated with the piston storage cavity is formed in the pushing shell; at least two piston mounting holes are arranged on the piston pressing plate, oil cylinder sleeves are arranged in the piston storage cavities at the lower parts in the piston mounting holes, a communication gap capable of communicating an inner hole of each oil cylinder sleeve with the piston storage cavities is formed between the lower end of each oil cylinder sleeve and the pushing shell, an actuating piston is arranged in each oil cylinder sleeve, a piston top block capable of deflecting with the movement of the actuating piston to generate angle is arranged at the top of each actuating piston, the upper end of each oil cylinder sleeve is arranged above the piston pressing plate, a dust cover which is arranged above the piston pressing plate and can stretch or compress with the movement of the actuating piston is arranged between the piston top block and the corresponding oil cylinder sleeve, the inner side of the lower end of the dust cover is fixedly arranged with the outer side of the upper part of the oil cylinder sleeve, the inner side of the upper end of the dust cover is fixedly arranged with the outer side of the upper part of the piston top block, an oil storage groove with an upward opening is arranged on the pushing shell, an oil bag pressing plate is fixedly arranged on the pushing shell corresponding to the position of the oil storage groove, an oil bag installation hole is arranged in the middle of the oil bag pressing plate, an oil bag body with a downward opening is arranged in the oil bag installation hole, an installation edge pressed between the oil bag pressing plate and the pushing shell is arranged on the outer side of the lower end of the oil bag body, an oil storage cavity is formed between the oil bag body and the pushing shell, an oil bag liquid inlet channel which can be communicated with the oil storage cavity is arranged on the pushing shell, a hydraulic shell is fixedly arranged on the pushing shell, a hydraulic driving component which can realize liquid boosting is arranged in the hydraulic shell, an oil inlet cavity is arranged in the hydraulic shell corresponding to the position of the liquid inlet of the hydraulic driving component, an oil outlet cavity is arranged in the hydraulic shell corresponding to the position of the liquid outlet of the hydraulic driving component, a hydraulic oil inlet channel which can be communicated with the oil outlet cavity and the piston liquid inlet channel and a hydraulic oil outlet channel which can be communicated with the oil inlet cavity and the oil bag liquid inlet channel are arranged on the hydraulic shell, the oil bag pressing plate, the oil bag body, the piston cylinder sleeve component and the piston pressing plate are fixedly arranged on the upper side of the pushing shell and covered in the oil bag pressing plate, a sliding opening is arranged on the fixed cover corresponding to the position of the piston pressing cover, a protecting plate cover with a downward opening and covered on the outer side of the piston pressing cover is arranged in the sliding opening, a circumferential groove is arranged on the pushing shell corresponding to the outer circumferential position of the piston pressing cover, the lower end of the protecting plate cover is positioned in the circumferential groove, the inner side of the upper end of the protecting plate cover corresponding to the position of each piston pushing block is provided with a lower lug with the lower end being seated on the corresponding piston pushing block, the left side and the right side of the lower end of the protecting plate cover are respectively fixed with an outer edge plate, and the upper side of each outer edge plate is provided with a compression spring with the top end propped against the inner side of the fixed cover.
2. The rotary steerable drilling tool double-piston push-back assembly of claim 1, wherein the left and right sides of the fixed cover are provided with outwardly open keyways, each keyway having a fixed key mounted therein by a biased pin that has an inner end exposed to the outside of the fixed cover after rotation.
3. The dual piston push-back assembly for a rotary steerable drilling tool of claim 1, wherein the compression spring is a double layer combination spring.
4. The double piston push-back assembly for rotary steerable drilling tools of claim 1, wherein a press block seated on the oil pocket press plate is fixed inside the guard plate cover corresponding to the position of the oil pocket press plate.
5. The double-piston pushing assembly for rotary steerable drilling tools according to claim 1, 2, 3 or 4, wherein the inner side of the upper part of the actuating piston is provided with an arc-shaped groove, the bottom of the piston top block is provided with an arc-shaped protrusion matched with the arc-shaped groove, and the arc-shaped protrusion is seated in the spherical groove; or, the inner side of the upper part of the actuating piston is provided with an arc-shaped groove, the bottom of the piston top block is provided with a spherical bulge matched with the spherical groove, and the spherical bulge is seated in the spherical groove.
6. The double-piston push-back assembly for a rotary steerable drilling tool as claimed in claim 1, 2, 3 or 4, wherein the dust cover is a rubber-made rotor, and an arcuate curved surface is provided on the rubber-made rotor.
7. The dual piston push-back assembly for a rotary steerable drilling tool of claim 5, wherein the dust cap is a rubber rotor and an arcuate curved surface is provided on the rubber rotor.
8. The double-piston pushing assembly for the rotary steerable drilling tool according to claim 1,2, 3, 4 or 7, wherein an outer ring table is arranged on the outer side of the middle part of the cylinder sleeve, a limiting clamping groove is arranged between a piston pressing plate corresponding to the position of the outer ring table and the pushing shell, and the outer ring table is clamped into the corresponding limiting clamping groove; or, the upper part of the pushing shell corresponding to the lower end position of each cylinder sleeve is provided with a limit groove, the cylinder sleeves are positioned in the corresponding limit grooves, an oil cylinder channel for communicating the two limit grooves is arranged between the bottoms of every two adjacent limit grooves, a piston liquid inlet channel is at least communicated with one of the limit grooves, a communication gap is formed between the bottom end of the cylinder sleeve and the bottom end of the limit groove, the middle part of the bottom surface of each actuating piston is provided with an inner groove, and the pushing shell corresponding to the lower position of each actuating piston is provided with an upper bulge which is profiled with the inner groove and is positioned in the inner groove.
9. The double-piston pushing assembly for the rotary steerable drilling tool according to claim 5, wherein an outer ring table is arranged on the outer side of the middle part of the cylinder sleeve, a limiting clamping groove is arranged between the piston pressing plate corresponding to the outer ring table and the pushing shell, and the outer ring table is clamped into the corresponding limiting clamping groove; or, the upper part of the pushing shell corresponding to the lower end position of each cylinder sleeve is provided with a limit groove, the cylinder sleeves are positioned in the corresponding limit grooves, an oil cylinder channel for communicating the two limit grooves is arranged between the bottoms of every two adjacent limit grooves, a piston liquid inlet channel is at least communicated with one of the limit grooves, a communication gap is formed between the bottom end of the cylinder sleeve and the bottom end of the limit groove, the middle part of the bottom surface of each actuating piston is provided with an inner groove, and the pushing shell corresponding to the lower position of each actuating piston is provided with an upper bulge which is profiled with the inner groove and is positioned in the inner groove.
10. The double-piston pushing assembly for the rotary steerable drilling tool according to claim 6, wherein an outer ring table is arranged on the outer side of the middle part of the cylinder sleeve, a limiting clamping groove is arranged between the piston pressing plate corresponding to the outer ring table and the pushing shell, and the outer ring table is clamped into the corresponding limiting clamping groove; or, the upper part of the pushing shell corresponding to the lower end position of each cylinder sleeve is provided with a limit groove, the cylinder sleeves are positioned in the corresponding limit grooves, an oil cylinder channel for communicating the two limit grooves is arranged between the bottoms of every two adjacent limit grooves, a piston liquid inlet channel is at least communicated with one of the limit grooves, a communication gap is formed between the bottom end of the cylinder sleeve and the bottom end of the limit groove, the middle part of the bottom surface of each actuating piston is provided with an inner groove, and the pushing shell corresponding to the lower position of each actuating piston is provided with an upper bulge which is profiled with the inner groove and is positioned in the inner groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004423.9A CN108150481B (en) | 2018-01-03 | 2018-01-03 | Double-piston pushing-leaning assembly for rotary steering drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004423.9A CN108150481B (en) | 2018-01-03 | 2018-01-03 | Double-piston pushing-leaning assembly for rotary steering drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108150481A CN108150481A (en) | 2018-06-12 |
| CN108150481B true CN108150481B (en) | 2024-04-26 |
Family
ID=62460580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810004423.9A Active CN108150481B (en) | 2018-01-03 | 2018-01-03 | Double-piston pushing-leaning assembly for rotary steering drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108150481B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3827428A1 (en) * | 1988-08-12 | 1990-02-15 | Georg Fritz | Pneumatic or hydraulic swivel drive for fittings |
| CN206495837U (en) * | 2016-12-09 | 2017-09-15 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of double-piston compression oil cylinder |
| CN208040824U (en) * | 2018-01-03 | 2018-11-02 | 中国石油集团西部钻探工程有限公司 | Rotary steering drilling tool double-piston backup component |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0610814D0 (en) * | 2006-06-01 | 2006-07-12 | Geolink Uk Ltd | Rotary steerable drilling tool |
-
2018
- 2018-01-03 CN CN201810004423.9A patent/CN108150481B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3827428A1 (en) * | 1988-08-12 | 1990-02-15 | Georg Fritz | Pneumatic or hydraulic swivel drive for fittings |
| CN206495837U (en) * | 2016-12-09 | 2017-09-15 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of double-piston compression oil cylinder |
| CN208040824U (en) * | 2018-01-03 | 2018-11-02 | 中国石油集团西部钻探工程有限公司 | Rotary steering drilling tool double-piston backup component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108150481A (en) | 2018-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2010213863B2 (en) | Down hole hammer having elevated exhaust | |
| EP1907700B1 (en) | Variable pump or hydraulic motor | |
| WO2014150521A1 (en) | Hydraulic hammer having impact system subassembly | |
| RU2341373C2 (en) | Impact device with rotary control valve | |
| KR970706945A (en) | Portable tool with variable displacement hydraulic pump | |
| CN113266610B (en) | Radial plunger hydraulic device adopting hydraulic control check valve for flow distribution and working method | |
| KR100429089B1 (en) | Hydraulic ramming apparatus | |
| CN110397565B (en) | Variable plunger pump | |
| CN111305786B (en) | Automatic tight packing polished rod sealer | |
| CN110439772B (en) | Variable plunger pump | |
| CN108150481B (en) | Double-piston pushing-leaning assembly for rotary steering drilling tool | |
| CN108119424B (en) | Rotary guiding double-piston hydraulic device | |
| US5085127A (en) | Cavitation resistant hydraulic cylinder block porting faces | |
| CN208040824U (en) | Rotary steering drilling tool double-piston backup component | |
| CN200985768Y (en) | Blowout preventer of slide sealing shutter | |
| US4134460A (en) | Hydraulic drilling device | |
| CN111749864B (en) | Swash plate, swash plate pump, and construction machine | |
| US6499974B2 (en) | Piston pump | |
| CN208040789U (en) | Rotary steering double-piston hydraulic device | |
| US3547206A (en) | Rotary percussion drill having a hydraulically actuated percussion device | |
| CN111102268B (en) | Oil cylinder | |
| RU2208126C2 (en) | Rotating universal hydraulic blowout preventer | |
| CN110360076B (en) | Hydrostatic axial piston machine | |
| CN108488468B (en) | Integrated manual hydraulic driving device | |
| JP2014510646A (en) | Machine for digging rock and concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191010 Address after: No. 6, liupukang, Xicheng District, Beijing 100120 Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Applicant before: CNPC Xibu Drilling Engineering Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |